Sony Xperia 5 III (has headphone jack) with LineageOS for microG. Shanling Q1 DAP/DAC. My everyday IEMs I take out of the house are Truthear Nova. I have a 10-year-old Ridge wallet & a mound of coins in the other pocket. Motorbike keys have nothing special other than an OnlyKey for TOTP/FIDO2.
Snikket is meant to be super simple to self-host. Ejabberd has a web GUI that can make configuration easier.